Roland Scheidegger
4e1be31f01
The code for elts and linear paths was nearly 100% identical by now - with the elts path simply having some additional gather for the elements in the main loop (with some additional small differences before the main loop). Hence nuke the separate functions and decide this at jit shader execution time (simply based on the presence of the elts pointer). Some analysis shows that the generated vs jit functions seem to be just very minimally more complex than the former elts functions, and almost none of the additional complexity is in the main loop (basically just the branch logic for the branch fetching the actual indices). Compared to linear, the codesize of the function is of course a bit larger, however the actual executed code in the main loop appears to be near 100% identical (the additional code looking up indices is skipped as expected). So, I would not expect a (meaningful) performance difference with the generated code, neither with elts nor linear, this does however roughly half the compilation time (the compiled shaders should also use only half the memory of course). Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
File: docs/README.WIN32 Last updated: 21 June 2013 Quick Start ----- ----- Windows drivers are build with SCons. Makefiles or Visual Studio projects are no longer shipped or supported. Run scons libgl-gdi to build gallium based GDI driver. This will work both with MSVS or Mingw. Windows Drivers ------- ------- At this time, only the gallium GDI driver is known to work. Source code also exists in the tree for other drivers in src/mesa/drivers/windows, but the status of this code is unknown. Recipe ------ Building on windows requires several open-source packages. These are steps that work as of this writing. - install python 2.7 - install scons (latest) - install mingw, flex, and bison - install pywin32 from here: http://www.lfd.uci.edu/~gohlke/pythonlibs get pywin32-218.4.win-amd64-py2.7.exe - install git - download mesa from git see http://www.mesa3d.org/repository.html - run scons General ------- After building, you can copy the above DLL files to a place in your PATH such as $SystemRoot/SYSTEM32. If you don't like putting things in a system directory, place them in the same directory as the executable(s). Be careful about accidentially overwriting files of the same name in the SYSTEM32 directory. The DLL files are built so that the external entry points use the stdcall calling convention. Static LIB files are not built. The LIB files that are built with are the linker import files associated with the DLL files. The si-glu sources are used to build the GLU libs. This was done mainly to get the better tessellator code. If you have a Windows-related build problem or question, please post to the mesa-dev or mesa-users list.